{"items":[{"id":"NVI-00006546","kind":"vulnerability","title":"Grav vulnerable to Privilege Escalation in Grav Admin: Missing Username Uniqueness Check Allows Admin Account Takeover","revision":4,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-cjcp-qxvg-4rjm","CVE-2025-66296"],"plain_summary":"OSV carries this publisher advisory for getgrav/grav. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 1.8.0-beta.27 for getgrav/grav. Confirm the publisher’s latest guidance.","source_ids":["sr-b91829233063286d5362d35bc0487e1c"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-0c8dab0f518739ccbc86d22b8a61fbba"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-26T00:10:00.127Z","value":"8.8 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-32da0df139589ff50c78866867b8a186"},{"kind":"EPSS","as_of":"2026-11-04T12:03:12.000Z","value":"0.341%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.27709. 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This report has not examined your application.","related_sources":[{"id":"sr-b91829233063286d5362d35bc0487e1c","url":"https://github.com/advisories/GHSA-cjcp-qxvg-4rjm","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-cjcp-qxvg-4rjm","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.701Z"},{"id":"sr-32da0df139589ff50c78866867b8a186","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66296","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2025-66296","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T01:40:29.811Z"},{"id":"sr-0c8dab0f518739ccbc86d22b8a61fbba","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2025-66296","publisher":"FIRST EPSS","observed_at":"2026-11-04T17:58:50.306Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-b91829233063286d5362d35bc0487e1c"],"technology":"getgrav/grav","known_exclusions":[],"conditions_summary":"### Summary\nA privilege escalation vulnerability exists in Grav’s Admin plugin due to the absence of username uniqueness validation when creating users.\nA user with the create user permission can create a new account using the same username as an existing administrator account, set a new password/email, and then log in as that administrator. This effectively allows privilege escalation from limited user-manager permissions to full administrator access.\n\n\n### Steps to Reproduce\n1. Make sure you have two accounts: an admin and a user with create user privilege\n2. In the user account, navigate to /grav-admin/admin/accounts/users and click \"Add\"\n3. Enter the name of the admin, complete registration and observe that the existing admin’s email is changed to the value you provided.\n4. Log out from user account log in as admin with new credentials\n\n\n### Impact\n1. Full admin takeover by any user with create user permission.\n2. Ability to change admin credentials, install/remove plugins, read or modify site data, and execute any action available to an admin.\n3. Severity: High/Critical.\n\n\n### PoC\nhttps://github.com/user-attachments/assets/3ab0a7d6-5055-41be-9e0e-2bd6ca359b37","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 1.8.0-beta.27"]}],"null_published_at":"2026-11-07T14:01:58.755Z","source_updated_at":"2026-09-10T03:50:58.713Z","source_disclosed_at":"2025-12-02T00:35:18.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T21:42:10.701Z"},{"id":"NVI-00006546","kind":"vulnerability","title":"Grav vulnerable to Privilege Escalation in Grav Admin: Missing Username Uniqueness Check Allows Admin Account Takeover","revision":3,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected.","NVD lastModified does not establish freshness of every associated CPE record."],"lifecycle":"active","identifiers":["GHSA-cjcp-qxvg-4rjm","CVE-2025-66296"],"plain_summary":"OSV carries this publisher advisory for getgrav/grav. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 1.8.0-beta.27 for getgrav/grav. Confirm the publisher’s latest guidance.","source_ids":["sr-b91829233063286d5362d35bc0487e1c"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-4bf067cfe78121c550f30eb56afaaf9d"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-09-26T00:10:00.127Z","value":"8.8 HIGH (3.1)","meaning":"security-advisories@github.com severity; no combined Null risk score.","source_id":"sr-32da0df139589ff50c78866867b8a186"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.318%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.24734. Missing scores are unknown.","source_id":"sr-4bf067cfe78121c550f30eb56afaaf9d"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-b91829233063286d5362d35bc0487e1c","url":"https://github.com/advisories/GHSA-cjcp-qxvg-4rjm","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-cjcp-qxvg-4rjm","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.701Z"},{"id":"sr-32da0df139589ff50c78866867b8a186","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-66296","basis":"official_catalog","notes":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","title":"CVE-2025-66296","publisher":"NIST National Vulnerability Database","observed_at":"2026-11-01T01:40:29.811Z"},{"id":"sr-4bf067cfe78121c550f30eb56afaaf9d","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2025-66296","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.373Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-b91829233063286d5362d35bc0487e1c"],"technology":"getgrav/grav","known_exclusions":[],"conditions_summary":"### Summary\nA privilege escalation vulnerability exists in Grav’s Admin plugin due to the absence of username uniqueness validation when creating users.\nA user with the create user permission can create a new account using the same username as an existing administrator account, set a new password/email, and then log in as that administrator. This effectively allows privilege escalation from limited user-manager permissions to full administrator access.\n\n\n### Steps to Reproduce\n1. Make sure you have two accounts: an admin and a user with create user privilege\n2. In the user account, navigate to /grav-admin/admin/accounts/users and click \"Add\"\n3. Enter the name of the admin, complete registration and observe that the existing admin’s email is changed to the value you provided.\n4. Log out from user account log in as admin with new credentials\n\n\n### Impact\n1. Full admin takeover by any user with create user permission.\n2. Ability to change admin credentials, install/remove plugins, read or modify site data, and execute any action available to an admin.\n3. Severity: High/Critical.\n\n\n### PoC\nhttps://github.com/user-attachments/assets/3ab0a7d6-5055-41be-9e0e-2bd6ca359b37","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 1.8.0-beta.27"]}],"null_published_at":"2026-11-01T14:34:07.617Z","source_updated_at":"2026-09-10T03:50:58.713Z","source_disclosed_at":"2025-12-02T00:35:18.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Source facts changed; compare the preserved prior revision.","null_first_observed_at":"2026-10-31T21:42:10.701Z"},{"id":"NVI-00006546","kind":"vulnerability","title":"Grav vulnerable to Privilege Escalation in Grav Admin: Missing Username Uniqueness Check Allows Admin Account Takeover","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-cjcp-qxvg-4rjm","CVE-2025-66296"],"plain_summary":"OSV carries this publisher advisory for getgrav/grav. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 1.8.0-beta.27 for getgrav/grav. Confirm the publisher’s latest guidance.","source_ids":["sr-b91829233063286d5362d35bc0487e1c"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null},{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-4bf067cfe78121c550f30eb56afaaf9d"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.318%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.24734. Missing scores are unknown.","source_id":"sr-4bf067cfe78121c550f30eb56afaaf9d"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-b91829233063286d5362d35bc0487e1c","url":"https://github.com/advisories/GHSA-cjcp-qxvg-4rjm","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-cjcp-qxvg-4rjm","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.701Z"},{"id":"sr-4bf067cfe78121c550f30eb56afaaf9d","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2025-66296","publisher":"FIRST EPSS","observed_at":"2026-10-31T22:06:15.373Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-b91829233063286d5362d35bc0487e1c"],"technology":"getgrav/grav","known_exclusions":[],"conditions_summary":"### Summary\nA privilege escalation vulnerability exists in Grav’s Admin plugin due to the absence of username uniqueness validation when creating users.\nA user with the create user permission can create a new account using the same username as an existing administrator account, set a new password/email, and then log in as that administrator. This effectively allows privilege escalation from limited user-manager permissions to full administrator access.\n\n\n### Steps to Reproduce\n1. Make sure you have two accounts: an admin and a user with create user privilege\n2. In the user account, navigate to /grav-admin/admin/accounts/users and click \"Add\"\n3. Enter the name of the admin, complete registration and observe that the existing admin’s email is changed to the value you provided.\n4. Log out from user account log in as admin with new credentials\n\n\n### Impact\n1. Full admin takeover by any user with create user permission.\n2. Ability to change admin credentials, install/remove plugins, read or modify site data, and execute any action available to an admin.\n3. Severity: High/Critical.\n\n\n### PoC\nhttps://github.com/user-attachments/assets/3ab0a7d6-5055-41be-9e0e-2bd6ca359b37","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 1.8.0-beta.27"]}],"null_published_at":"2026-10-31T23:18:17.273Z","source_updated_at":"2026-09-10T03:50:58.713Z","source_disclosed_at":"2025-12-02T00:35:18.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-10-31T21:42:10.701Z"},{"id":"NVI-00006546","kind":"vulnerability","title":"Grav vulnerable to Privilege Escalation in Grav Admin: Missing Username Uniqueness Check Allows Admin Account Takeover","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-cjcp-qxvg-4rjm","CVE-2025-66296"],"plain_summary":"OSV carries this publisher advisory for getgrav/grav. This is an aggregated source copy; consult the original publisher and compare update dates.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"The original advisory lists fixed boundaries 1.8.0-beta.27 for getgrav/grav. Confirm the publisher’s latest guidance.","source_ids":["sr-b91829233063286d5362d35bc0487e1c"],"action_type":"vendor_patch","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-b91829233063286d5362d35bc0487e1c","url":"https://github.com/advisories/GHSA-cjcp-qxvg-4rjm","basis":"vendor_advisory","notes":"GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.","title":"GHSA-cjcp-qxvg-4rjm","publisher":"GitHub Advisory Database via OSV","observed_at":"2026-10-31T21:42:10.701Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-b91829233063286d5362d35bc0487e1c"],"technology":"getgrav/grav","known_exclusions":[],"conditions_summary":"### Summary\nA privilege escalation vulnerability exists in Grav’s Admin plugin due to the absence of username uniqueness validation when creating users.\nA user with the create user permission can create a new account using the same username as an existing administrator account, set a new password/email, and then log in as that administrator. This effectively allows privilege escalation from limited user-manager permissions to full administrator access.\n\n\n### Steps to Reproduce\n1. Make sure you have two accounts: an admin and a user with create user privilege\n2. In the user account, navigate to /grav-admin/admin/accounts/users and click \"Add\"\n3. Enter the name of the admin, complete registration and observe that the existing admin’s email is changed to the value you provided.\n4. Log out from user account log in as admin with new credentials\n\n\n### Impact\n1. Full admin takeover by any user with create user permission.\n2. Ability to change admin credentials, install/remove plugins, read or modify site data, and execute any action available to an admin.\n3. Severity: High/Critical.\n\n\n### PoC\nhttps://github.com/user-attachments/assets/3ab0a7d6-5055-41be-9e0e-2bd6ca359b37","public_affected_ranges":["ECOSYSTEM: introduced 0; fixed 1.8.0-beta.27"]}],"null_published_at":"2026-10-31T22:13:10.061Z","source_updated_at":"2026-09-10T03:50:58.713Z","source_disclosed_at":"2025-12-02T00:35:18.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-10-31T21:42:10.701Z"}],"next_cursor":null,"snapshot_revision":"42594"}